A system for tranmitting low frequency analog signals over ac power lines
Abstract
A system for transmitting low frequency analog signals over ac power lines using FM modulation. A low frequency analog signal to be transmitted is first applied to a voltage-to-frequency converter where it is converted to a signal whose frequency varies in proportion to the analog signal amplitude. This signal is then used to modulate the carrier frequency of an FM transmitter coupled to an ac power line. The modulation signal frequency range is selected to be within the response band of the FM transmitter. The FM modulated carrier signal is received by an FM receiver coupled to the ac power line, demodulated and the demodulated signal frequency is converted by a frequency-to-voltage converter back to the form of the original low frequency analog input signal. 4 figs.
- Inventors:
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- OSTI Identifier:
- 6808783
- Patent Number(s):
- 6079614
- Assignee:
- TIC; EDB-88-178860
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B42 - BOOKBINDING B42F - SHEETS TEMPORARILY ATTACHED TOGETHER
- DOE Contract Number:
- AC05-84OR21400
- Resource Type:
- Patent
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING; DATA TRANSMISSION SYSTEMS; DESIGN; ANALOG SYSTEMS; CURRENT-TO-FREQUENCY CONVERTERS; INVENTIONS; POWER TRANSMISSION LINES; SIGNAL CONDITIONING; ELECTRONIC EQUIPMENT; EQUIPMENT; PULSE CONVERTERS; 420200* - Engineering- Facilities, Equipment, & Techniques
Citation Formats
Baker, S P, Durall, R L, and Haynes, H D. A system for tranmitting low frequency analog signals over ac power lines. United States: N. p., 1987.
Web.
Baker, S P, Durall, R L, & Haynes, H D. A system for tranmitting low frequency analog signals over ac power lines. United States.
Baker, S P, Durall, R L, and Haynes, H D. Thu .
"A system for tranmitting low frequency analog signals over ac power lines". United States.
@article{osti_6808783,
title = {A system for tranmitting low frequency analog signals over ac power lines},
author = {Baker, S P and Durall, R L and Haynes, H D},
abstractNote = {A system for transmitting low frequency analog signals over ac power lines using FM modulation. A low frequency analog signal to be transmitted is first applied to a voltage-to-frequency converter where it is converted to a signal whose frequency varies in proportion to the analog signal amplitude. This signal is then used to modulate the carrier frequency of an FM transmitter coupled to an ac power line. The modulation signal frequency range is selected to be within the response band of the FM transmitter. The FM modulated carrier signal is received by an FM receiver coupled to the ac power line, demodulated and the demodulated signal frequency is converted by a frequency-to-voltage converter back to the form of the original low frequency analog input signal. 4 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1987},
month = {7}
}